Bonjour André et à tous,
Un seul interdit directement lisible sur la grille suffit :
_|__a_______b_______c___|_d________e__________f__|___g_______h_______i
1|_1356___13678____3678_|_1238____1357_____2378_|_1238______4_______9
2|_134____13789____3789_|_1238____13479___23789_|_1238______5_______6
3|_2______13489____3589_|_45________6_______389_|_138______7b8B___1c37B
4|_359_____379_____2379_|_6_______378_________4_|_3589c______1______237
5|_1346____1367____2367_l_9_______1378________5_|_348_______2c78b___237
6|_8_______13479___3579_|_123_____137_______237_|_6_________7c9C____45
7|_369_____3689____3689_|_45_______2__________1_|_7_________69______45
8|_7________5_________4_|_38______39_______3689_|_1c9C_____2C69____1C2c
9|_69_______2_________1_|_7_______45_________69_|_45_________3______8
Bc en case i3 et bc en case h5 => c faux, h6=9, etc. au bout.
Joyeux Noël à tous !
A+